从 AJAX 向 python flask 发送数据的问题

Question

I am not able to retrieve data field of AJAX in python flask. Its shows type error when I try to retrieve data. type and forwho are of array type. When I alert them in AJAX it works. Here is my code,

// Ajax

$.ajax({
    url: '/products',
    data: JSON.stringify({'type':type,'forwho': forwho}),
    contentType: "application/json; charset=utf-8",
    type: 'POST',
    success: function(response){
        /*alert("success");*/
        $("#content").html(response);
    },
    error: function(error){
        /*alert("error");*/
        console.log(error);
    }
});

# app.py

@app.route('/products', methods =['POST', 'GET'])
def all_products():
    if request.method == 'POST':
        print("inside all products post")
        type = json.loads(request.form.get('type'))
        forwho = json.loads(request.form.getlist('forwho'))
        print(type)
        print(forwho)

when I print print(request.args.get('typearr')) in all_products() it returns None

Answer 1

type =request.json['type']
forwho = request.json['forwho']

    

Flask automatically parses JSON when having application/JSON in your request.

Answer 2

This solution finally worked for me.

ajax:

       data: JSON.stringify({'typearr':type,'forwho':forwho})

``````````````````
app.py:
#import ast
``````````````
        data = request.get_data()
        data = ast.literal_eval(data.decode("UTF-8"))
        typearr = data['typearr']
        forwho = data['forwho']